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NSN 5310-01-673-4790Government record, cited

Washer, Flat5310-01-673-4790

NSN 5310-01-673-4790 · NIIN 016734790 · Part number BN671-M4
Bossard Intl Inc · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 1CJ86
Government record, cited
NSN 5310-01-673-4790 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-673-4790. Manufacturer of record part number: BN671-M4.
Also searched as  5310-01-673-4790 · 5310016734790 · NIIN 016734790 · 01-673-4790 · FSC 5310 Nuts and Washers · CAGE 1CJ86 · BN671-M4
Nearby stock numbers  ·
Features
  • Washer,flat — FSC 5310
  • Overall Diameter: 9.0 MILLIMETERS NOMINAL MM
  • Hardness Rating: 140.0 VICKERS NOMINAL
  • Peripheral Shape Style: ROUND
  • Material: STEEL COMP 316 OVERALL
  • Center Hole Shape Style: ROUND
  • Hole Diameter: 4.3 MILLIMETERS NOMINAL MM
  • Thickness: 0.8 MILLIMETERS NOMINAL MM
Identification
  • NSN: 5310-01-673-4790
  • NIIN: 016734790
  • FSC: 5310 — Nuts and Washers
  • FSG: 53 — Hardware and Abrasives
  • Primary part number: BN671-M4
  • Manufacturer: Bossard Intl Inc
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-673-4790, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bossard Intl Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-673-4790
Primary Part NumberBN671-M4
Item NameWasher,flat
FSC / FSG5310 / 53 — Nuts and Washers
ManufacturerBossard Intl Inc
StatusACTIVE
Overall Diameter9.0 MILLIMETERS NOMINAL MM
Hardness Rating140.0 VICKERS NOMINAL
Peripheral Shape StyleROUND
MaterialSTEEL COMP 316 OVERALL
Center Hole Shape StyleROUND
Hole Diameter4.3 MILLIMETERS NOMINAL MM
Thickness0.8 MILLIMETERS NOMINAL MM
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
BN671-M4 PRIMARY Bossard Intl Inc (USA)
No interchangeability data on file.
Other items in FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040
5310-00-000-0040 · Item name not on file
5310-00-000-0077
NUT,PLAIN,ROUND
5310-00-000-0079
WASHER,FLAT
5310-00-000-0079
WASHER,FLAT
5310-00-000-1146
5310-00-000-1146 · Item name not on file
5310-00-000-3815
5310-00-000-3815 · Item name not on file
5310-00-000-4532
5310-00-000-4532 · Item name not on file
5310-00-000-4540
5310-00-000-4540 · Item name not on file

Frequently Asked Questions

What is NSN 5310-01-673-4790?

NSN 5310-01-673-4790 is a Washer,flat, manufactured by Bossard Intl Inc, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-673-4790?

NSN 5310-01-673-4790 has 1 manufacturer part number on file: BN671-M4 (Bossard Intl Inc).

What are the specifications of BN671-M4?

Key specifications for BN671-M4: Overall Diameter: 9.0 MILLIMETERS NOMINAL MM; Hardness Rating: 140.0 VICKERS NOMINAL; Peripheral Shape Style: ROUND; Part Name Assigned by Controlling Agency: FLAT WASHER. 7 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-673-4790 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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